<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <link
      rel="stylesheet"
      href="	https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css"
    />
    <style>
      .red {
        color: red;
      }
    </style>
  </head>

  <body>
    <div id="app">
      <div class="container">
        <!-- 顶部搜索框模块 -->
        <div class="form-group">
          <div class="input-group">
            <h4>品牌管理</h4>
          </div>
        </div>

        <!-- 数据表格 -->
        <table class="table table-bordered table-hover mt-2">
          <thead>
            <tr>
              <th>编号</th>
              <th>资产名称</th>
              <th>价格</th>
              <th>创建时间</th>
              <th>操作</th>
            </tr>
          </thead>
          <tbody v-if="list.length>0">
            <tr v-for="(item,index) in list" :key="item.id">
              <td>{{item.id}}</td>
              <td>{{item.name}}</td>

              <!-- 如果价格超过100，就有red这个类 -->
              <td :class="{red:item.price>100}">{{item.price}}</td>
              <td>{{item.time}}</td>
              <td><a href="#" @click="fu(index)">删除</a></td>
            </tr>
            <tr style="background-color: #eee">
              <td>统计:</td>
              <td colspan="2">总价钱为: {{totalCount}}</td>
              <td colspan="2">平均价: {{totalCount/list.length}}</td>
            </tr>
          </tbody>
          <tfoot v-else>
            <tr>
              <td colspan="5" style="text-align: center">暂无数据</td>
            </tr>
          </tfoot>
        </table>

        <!-- 添加资产 -->
        <form class="form-inline">
          <div class="form-group">
            <div class="input-group">
              <input
                type="text"
                class="form-control"
                placeholder="资产名称"
                v-model="name"
              />
            </div>
          </div>
          &nbsp;&nbsp;&nbsp;&nbsp;
          <div class="form-group">
            <div class="input-group">
              <input
                type="text"
                class="form-control"
                placeholder="价格"
                v-model.number="price"
              />
            </div>
          </div>
          &nbsp;&nbsp;&nbsp;&nbsp;
          <!-- 阻止表单提交 -->
          <button class="btn btn-primary" @click.prevent="fn()">
            添加资产
          </button>
        </form>
      </div>
    </div>
    <script src="../day02-准备代码/vue.js"></script>
    <script>
      const app = new Vue({
        el: '#app',
        data: {
          name: '', // 名称
          price: '', // 价格
          list: [
            { id: 100, name: '外套', price: 199, time: new Date('2010-08-12') },
            { id: 101, name: '裤子', price: 34, time: new Date('2013-09-01') },
            { id: 102, name: '鞋', price: 25.4, time: new Date('2018-11-22') },
            {
              id: 103,
              name: '头发',
              price: 19900,
              time: new Date('2020-12-12')
            }
          ]
        },
        methods: {
          fn() {
            if (this.name === '' && this.price === '')
              return alert('请输入商品名称')
            if (typeof this.price !== 'number') return alert('请输入正确的价格')
            this.list.push({
              id: this.list[this.list.length - 1].id + 1,
              name: this.name,
              price: this.price,
              time: new Date()
            })
            this.name = ''
            
            this.price = ''
          },
          fu(index) {
            this.list = this.list.filter((item, idx) => idx !== index)
          }
        },
        computed: {
          totalCount() {
            // let i = 0
            // this.list.map(ele => {
            //   i += ele.price
            // })

            const total = this.list.reduce((sum, item) => {
              return sum + item.price
            }, 0)
            return total
          }
        }
      })
    </script>
  </body>
</html>
